MozillaHiring

Senior Software Engineer, Privacy

  • Remote, Belgium
  • Senior
  • Posted 7 days ago
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In one line

Senior role on a browser privacy team, adding anti-tracking and phishing defences to an open-source browser; remote, mostly Europe and US East.

About the role

Tracking and phishing are the problem this team attacks, and the fixes go into the browser engine so they reach a huge number of people. Expect asynchronous work with colleagues spread over two continents.

At a glance

Pay
Not stated in the posting
Remote scope
Remote, Belgium
Seniority
Senior
Skills
Rust, JavaScript, Gecko, Python, SQL
Posted
22 Oct 2026
Last checked
29 Oct 2026

What you will do

  • Ship privacy protections, anti-tracking logic and threat intelligence into the browser to reduce tracking and phishing.
  • Make structural improvements to the Gecko engine.
  • Produce fast, low-latency C++, JavaScript and Rust that others can maintain.
  • Work asynchronously with a team spread mostly over Europe and the US East coast.

What they look for

  • A computer science, engineering or related degree, or work experience that stands in for it.
  • Four or more years of C++ and Rust, with a strong base in memory safety, multi-threaded architecture or raw data streams.
  • Proof you can onboard quickly and then deliver and improve complex software.

Benefits

  • Performance-based bonus plan open to eligible employees.

How Keywordise applies for you

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  2. 2Tailored to this jobKeywordise writes a CV and a cover letter for this job from your real experience.
  3. 3The form fills itselfName, email, experience and screening questions, field by field.
  4. 4Application sentYou get a receipt and follow it in your dashboard.

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ClaudeConnectorChatGPTConnectorMuseby Meta

Claude

  1. In Claude, open Settings, then Connectors, and choose Add custom connector.
  2. Name it Keywordise and paste the connector URL.
  3. Click Connect, log in to Keywordise and approve. Then send the prompt in a new chat.
Connector URL
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ChatGPT

  1. In ChatGPT, open Settings, then Connectors. On plans that need it, turn on developer mode first.
  2. Add a new connector with the connector URL and choose OAuth. Leave the client ID and secret empty.
  3. Log in to Keywordise and approve. Then send the prompt in a new chat.
Connector URL
https://keywordise.com/mcp

Disconnect any time in your Keywordise settings.

Muse

  1. Open Muse (muse.ai or the app) and send it the message below.
  2. If Muse asks how to sign in, answer OAuth. Open the sign-in link it sends, log in to Keywordise and approve.
  3. Send the prompt. Muse asks before it sends anything.
Message for Muse
Add a custom connector called Keywordise. It is a remote MCP server at https://keywordise.com/mcp and uses OAuth. Give me the sign-in link.

Muse is available in the US only for now.

Prompt
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How to connect

Questions about this job

Is this job fully remote, and from where?

Yes. The posting lists Senior Software Engineer, Privacy as a remote role for candidates in Belgium.

What does this job pay?

The posting does not state a salary, so there is no figure to quote.

What experience is needed?

It is a senior role. The posting asks for: a computer science, engineering or related degree, or work experience that stands in for it; four or more years of C++ and Rust, with a strong base in memory safety, multi-threaded architecture or raw data streams; proof you can onboard quickly and then deliver and improve complex software. Skills it names include Rust, JavaScript, Gecko, Python.

How do I apply with Keywordise AI?

Press the Apply with Keywordise AI button and add your CV. Keywordise tailors your CV and cover letter to this posting and sends the application for you, with a free 7-day trial and no card.

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